communications

Communications blackout

Photograph by Ed Yourdonon Flickr.

They apply to entry into any atmosphere where such ionization occurs around a craft. For the Mercury, Gemini, and Apollo Communications blackout spacecraft, such communications blackouts lasted for several minutes. For Apollo missions, the communications blackout was approximately three minutes long. Communications blackouts for communications re-entry are not solely confined to entry into Earth s Communications blackout atmosphere.

The Huygens probe endured a communications blackout as it entered the atmosphere of Titan. Until the creation of the Tracking and Data Relay Satellite System, Communications Act 2003 the Space Shuttle would, like Gemini, Mercury, Apollo, and others, endure a 30 minute long communications blackout before landing. The Mars Pathfinder endured Communications blackout a 30 second communications blackout as it entered Mars atmosphere, for example.

This is because the shape of the Shuttle creates a hole in the ionized air envelope, at the tail end of the craft, through which it can communicate upwards to a satellite in Communications blackout orbit and thence to a ground station. Radio blackouts caused by space weather are measured by the National Oceanic and Atmospheric Administration on a scale that goes from 1 (minor) to 5 (extreme). . The ionized air interferes with radio signals.

However, the Shuttle can communicate with a Tracking and Communications blackout Data Relay Satellite during re-entry. In telecommunications, communications blackouts are The communications blackouts that affect spacecraft re-entering the Earth s atmosphere, which are also known as radio blackouts, ionization blackouts, or reentry blackouts, are caused by an envelope of ionized air around the craft, created by the heat from the friction of the craft against the atmosphere.